Window regulator



April A' 2 7 1926.

VH. E. NoRwooD ET An.

WINDOW REGULATQR FiledJan. ll,v 1922 m 7,71, 5M N i@ MTM mi M PatentedApr. 27, 1926.

UNITED STATES PATENT OFFICE.

HARRY E. NORWOOD AND 'FREDERICKGL MAIER, OF NEW YORK, N. Y., ASSIGNORS,BY MESNE ASSIGNMENTS, TO PERFECT WINDOW REGULATOR CORPORATION, OF LONGISLAND CITY, NEW YORK, A CORPORATION OF DELAWARE.

WINDOW REGULATOR.

Application led January 1-1, 1922. Serial No. 528,585.

To all io hom it may concern.'

Be it known that we, HARRY E. Noawoon and FRnDnRicK G. MAIER, citizensof the United States, and residents ofNew York, in the county of NewYork and State of New York, have invented certain new and usefulImprovements in Window Regulators, of which the following is aspecification.

Our invention relates to window regulators adapted to raise or lowerwindows, and it is particularly adapted for use with thattype ofregulators now well known and employing two sprockets or wheels, a1chain or 'other linear inernber running over said sprockets or wheels,means for rotating said sprockets and a connection between the-cliainand the window whereby the window may be raised or lowered as desiredupon rotation of the rotating means in the proper direction.

The object of the invention is the provision of a. device which may becheaply constructed and easily manufactured and which will automaticallyadjust itself at all ltimes to keep the chain or other lineal membertaut and thereby prevent it from running off the sprockets underabnormal conditions.

A further object of the inventionis the mounting of the regulator inposition b y novel means which will permit it to be bodily and easilyremoved without removal of the side of the door or other portionforming` a wall of the window well.

In the accompanying drawing illustrating a practical embodiment of theinvention:

Fig. l is a side elevation of the window regulator as applied to awindow Fig. 2 is an 'enlarged side elevation (partly broken away) of thelower portion of the regulator.

Fig. 3 V is a vertical cross-section oiizthe line 3-3 of Fig. 2.

Fig; ais a Vhorizontal.section .on the line 4- 4ofFig.2.

Fig. 5 is a front elevationof the slide member.

Fig. 6 is an end View of thebolt on which the lower sprocket. ismounted.

' plate 3.

Fig. 7 is a horizontal section on the lino Z-7 of Fig. 5.

Referring in detail to the several figures of the drawing:

1 indicates a window which is reciprocated vertically in a suitableframe the lower part of which is indicated at 2. 3 indicates a platesecured tothe lower part 2, said plate having an upper sprocket lmounted thereon. A vertical depending bar or strap is indicated at 5,the lower end of said bar being provided with bevelled edges 6. The base7 of the window'well has a bracket or support 8 secured 'thereto by anysuitable means as by the screws as shown, which bracket is provided witha slot 9 the top of the wall thereof being rounded or curved as at 10.

.The lower end of the bar 5 is received by the slot 9 of the bracket 8and is loosely held therein while the upper end of said bar is fastenedas by the screws or rivets 1l to the This manner of mounting and looselyholding the bar in the'window well is particularly desirable as itVpermits the installation or removal of the device without tearing downa side wall of the window well or the upholstery of the door as isnecessary in most cases in order to fasten the lower end of the barwithin the window well. In the present construction the bar is merelyslipped within the window well and inserted in position within the slotby feeling, the bevelled edges 6 of said bar and the rounded portion 10of 'the bracket 8 considerably facilitating the proper positioning ofthe bar within the slot in an obvious manner.

The bar or strap y5 is provided with a lower slot 12 therein and with anupper vslot 13, said upper slot being so cut in the mate- 'rial as toforman arm 14. 15 and 1 6 indi- Cate slldabl plates Veach of Which ispivided with depressions ipressed out if the metal to recei'xf theanti-'friction balls Ais which are supported in suitable depressins inthe bar or Astrap as illustrated. The `upper ends of the plates are bentinward-ly into engagement 'with eachother wrdn-urne slot '13 and roi-rnshoulder i9. 2o indicates a compression spring encircling the arm 14,the upper ends ot' the plates 15 and 16 and bearing against the shoulder19.

A bolt 20Y extends through the slot 12 in the bar and also throughopenings 21 in the plates 1t and 1G. Said bolt is provided with ears 22thereon received by slots 23 in the plate whereby rotation of said boltis prevented. rlhe iub portion 211 of a lower rotatable sprocket 25 ismounted on the enlarged portion 26 of the bolt 20', a longitudinalmovement or" said sprocket on said portion 26 being prevented by aflange 27 on the end of said bolt and by an annular ridge 28 in theplate 15 pressed out ot the metal. A nut 29 is screwed on the end Yontthe bolt and holds the plates togethex in an obvious manner, a Washer 30preferably being interposed between the plate 1G and said nut. Toprevent a rocking or turning movement ot the sprocket on the bolt Wehave provided the plate 15 with tivo lugs orY projections 81 pressed outot the metal on either side thereot' which are adapted to contact withsaid bar 5 to prevent such rocking or turning movement.

An endless driving chain 32 passes over the upper sprocket. l and theloiver sprocket 25 and is held taut by the action ot the spring 2Owhich, as hereinbeitore described, presses downwardly against thevertically slidable member constituting the plates 15 and 16 and whichcarry theY sprocket 25 therewith, thus preventing the chain from runningoil the sprockets as is manifest.

rlhe chain 32 is connected to the ivindoiv by means of a pin 38 engagingin a slot of a plate 34C secured to and depending from the window. Byrotating a handle 35 connected to the upper sprocket l therrchain Aiscaused to travel around the sprockets l and 25 and the Window is raisedor lowered according to the direction ot' rotation given the handle.This portion ot the construction et the device is old, however, andforms no part of the present invention.

lVhat We claim as our invention is 1. In a Window regulator, a barprovided With a beveled end, a Wheel rotatably mounted thereon, a linearmember running over said Wheel fortransmitting motion and a supportingmember provided with a slot having a curved Wall adjacent said slot,said slot loosely receiving the beveled end ot said bar.

2. In a ivindovT regulator. a supporting bar, a Wheel rotatably mountedthereon, a. linear member running over said Wheel4 ior transmittingmotion, a supporting bracket positioned to engage and support said bar,and means for guiding said bar `into engagement with said bracket.

3. 1n a Window regulator, a support provided ivith a slot therein, asprocket, a chain extending "over sai l' sprocket'for transmittingmotion, a bolt extending through said slot on Which said sprocket ismount-ed, a plate slidable on said support and carried by said bolt andspring means engaging said support and said plate for tensioning saidchain. c

4l. In a Window regulator, a support pro- `vided with a slot therein, adepression in said support, a sprocket, a chain extending over saidsprocket for transmitting motion, a bearing member receiving and supaorting said sprocket and extending into said slot, a slide slidable onsaid support and secured to said bearing member, said slide having adepression therein corresponding ivit-h the depression in said support,and antitriction means mounted in said depressions.

5. In a Window regulator, a bar provided With a slot therein, asprocket, a chain extending over said sprocket for transmitting motion,a bolt extending through said slot on Which said sprocket is mounted, aslide comprising tivo plates carried by said bolt, means on said boltfor holding said plates in sliding engagement with said bar and springmeans engaging said slide for tensioning said chain.

6. In a Window regulator, a support provided With upper and lower slotstherein, a sprocket, a chain extending over said sprocket tortransmitting motion, a bolt eX- tending through said-lower sloton whichsaid sprocket is mounted, a slide comprising tivo plates slidable onsaid support and carried by said bolt and having their ends bentadjacent each other Within said upper slot and a spring within saidupper slot engaging said slide for tensioning said chain.

7. In a Window regulator, a support provided ivith upper and lower slotstherein, an arm extending` within said upper slot, a sprocket, a chainYextending over said sprocket for 'transmitting motion, a bolt extendingthrough said lower slot on which said sprocket is mounted, a slidecomprising two plates slidable on said support and Ycarried by said boltand having their ends turned Within said upper slot to form a shoulderand a spring Within said upper slot supported by said arm and the endsof said plates and bearing` against said shoulder and adapted by itsaction to tension said chain.

, 8. 1n a Window regulator, a bar provided with a slot therein, asprocket, a chain eX- tending over said sprocket for transmittingmotion, a bolt extending through said slot on Which said sprocket ismounted,`a slide comprising a plate slidable on said bar and carried bysaid bolt, means on said bolt engaging said plate tor preventingrotation ot said bolt and spring means engaging said bar and said platefor tensioning said chain.

9. In a Window regulator, a support provided with a slot nerein'aad-with an arni extending within said slot., :1 slide comprisinga platesiidahle on Said support and having a part extending within said slot, awheel rotatably mounted on said slide, 2L lineal' member running oversaid wheel for transmitting mot-ien and a Spring encircling said anniand said pant which extends within said slot fory tenisioning saidlinear ineinber.

Signed at New York in the count-y of 10 New York and State of New Yorkthis 10th day of January .Aa D. 1922 HARRY E. NGRVOOD. FREDERICK G.MAIER.

